I bought this product after hearing about the horrific effects of calcium buildup in the blood and arteries (namely, hardening of the arteries) one can develop if they don't take Vitamin K2 with their calcium supplements. I definitely would like to avoid this undesirable health crisis if I can, so I decided to purchase a couple of bottles for my mother and me.
It's not something you can feel working in your body, so I guess the proof will be in the doctor's reports when he looks at our heart health.

It is a good product, but you need to take 2 to have the recommended dose of 100mcg per day, which I don't like. On the other hand it is better absorved if you take at two different times during the day so...And I prefer an organic form of vitamin K2
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